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Proto J000TL Etched Steel Feeler Gauge, 25-Blade

Last updated: July 14, 2022


This lightweight steel feeler gauge is thin and foldable. It will fit neatly in any tool bag pocket or chest drawer. Users will appreciate the dual measurements, which are conveniently etched into both sides of each blade for easy identification.

We looked at the top Steel Feeler Gauges and dug through the reviews from some of the most popular review sites. Through this analysis, we've determined the best Steel Feeler Gauge you should buy.

Product Details

Key Takeaway: Etched within each steel feeler gauge blade is the blade's decimal size, as well as its metric equivalent.

In our analysis, the Proto Proto Etched Steel Feeler Gauge, 25-Blade placed 3rd when we looked at the top 13 products in the category. For the full ranking, see below.

From The Manufacturer

1/2″ x 12″ blades in steel holder. Sizes: .0015″, .002″, .003″, .004″, .005″, .006″, .007″, .008″, .009″, .010″, .011″, .012″, .013″, .014″, .015″, .016″, .017″, .018″, .019″, .020″, .021″, .025″, .027″, .030″, .040″. Blades etched with both decimal size and metric equivalent. Specifications WEIGHT [LBS] 0.72

Expert Reviews


What reviewers liked

Feeler gauges are long enough to access deep places
American pride, made in the USA

What reviewers didn't like

Does not ship with a case
Uncomplete blade set
View our Steel Feeler Gauge buying guide for in-depth advice and recommendations.

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